Door and like metallic structure.



A. J. CONNELL & C. A. JOHNSON.

DUUR AND LIKE METALLIC STRUCTURE.

APPLICATION 111.50 11111.12.1915.

Patented Dec. 17, 1918.

SHEETS-SHEET 1.

A. I. CONNELL 61 C. A. JOHNSON.

DOOR AND LIKE METALLIC STRUCTURE.

APPLICATION FILED IAN. I2. I9I5. I N 1g2@7@@@ 11.10.1161 119C. 1.1918.

3 SHEETS-SHEET 2.

A. J. CONNELL L C. A. JOHNSON.

DOOR AND LIKE METALLIC STRUCTURE.

APPLICATION FILED 11111.12. 1915.

lL .287.888, Patented Deo. 17, 1918.

3 SHEETS-SHEET 3.

ANDREW J. CONNELL AND CHARLI A. JOHNSON, OF COLLEGE POINT, NEW YORK, ASSIGNORS TO EMPIRE ART METAL CO.. INC., A CORPORATION OF NEW YORK.

DOOR AND LIKE METALLIC STRUCTURE.

Specification of Letters Patent.

Patented Dec. 1?, 1918..

Application filed January 12, 1915. Serial No. 1,764.

.To all whom t may concern:

Be it known that we, ANDREW J. CoNNnLL and CHARLI A. JOHNSON, citizens of the United States, and residents of College Point, Long Island, in the State of New York, have invented certain new and useful Improvements in Doors and like Metallic Structures, of which the following is a specification.

This invention relates to improvements in doors and like metallic structures.

By the use of our invention we are enabled to readily and quickly weld together a plurality of hollow members having spaced walls and provided with inter-engaging portions so that the resulting sheet metal structure will be'eXtremely rigid and durable; the abutting members will be firmly connected and keyed together and the structure may be so constructed with great rapidity by unskilled labor and at a greatly reduced cost.

In the preferred embodiment of our invention illustrated in the accompanying drawings each abutting stile or rail member is formed of two parallel spaced side plates of sheet metal; the opposing longitudinal or marginal edges of such plates are provided with inter-engaging contacting portions, and the inner inter-engaging portions are provided with a series of pairs of oppositely disposed notches, recesses or apertures and a current-conducting element or welding key fitting within and extending between the walls of the said inner member and having contact points extending through such notches, recesses or apertures into contact with theinner surfaces or walls of the outer member, whereby a welding union is procured between the welding element and the outer and inner members. The most effective union, however, being formed between the said welding element or key and the outer member, the inner member being keyed or retained. in place because of the aforesaid welding union between the welding element or key and the outer member.

In the accompanying drawings in which similar reference characters designate corresponding parts throughout the several views,

Figure 1 is a side elevation of a portion of a door embodying our invention;

Fig. 2 is an enlarged section on the line 2 2 of Fig. 1;

Fig. 3 is another enlarged section on the l1ne 3 3 of Fig. 1;

Fig. 4 is a perspective view of a molding member keying element and stile or rail member before the same are assembled.

Fig. 5 1s a side elevation of the door embodying a modified form of our invention;

'Fig 6 'is a section on the line 6 6 of Fig. 5;

Fig. 7 is a section on the line 7 7 of Fig. 5;

Fig. 8 is a section on the line 8 8 of Fig. 5;

Fig. 9 is a side elevation of a molding mem er removed from the stile member and having the welding element shown in Figs. 6 and 7 within the same;

Fig. 10 is a detail view of the welding element shown in Figs. 6 to 9.

Fig. 11 is a perspective view of another modified form of our invention;

Fig. 12 is a detail view of the keying element shown in Fig. l1;

Fig. 13 is a side elevation of the molding member removed from contact with the stile member and having the welding element shown in Figs. 11 and 12 in place within the same;

Fig. 14 is a perspective view of our preferred means for securing the channel bars within the stile or rail members.

Fig. 15 is an enlarged sectional View on the line 8 8 ot Fig. 5;

Fig. 16 is a detail view of another modilied form of our invention embodying a separate retaining element for the welding elements;

Fig. 17 is a perspective view of a molding member having notches adapted to receive the said welding and retaining elements illustrated in Fig. 16;

Fig. 18 is a sectional view of a door showing the stile member, molding member and the stiffeningchannel all welded together by a welding element;

Fig. 19 illustrates in perspective portions of the molding member, stifening channel and stile member together with the welding element before the same are assembled.

Fig. 20 is a view in perspective of portions of a moldin member, welding element and stile or raiiHy member similar to that shown in Fig. 4 but containing a slight modification.

Referring now particularly to Figs. 1 to l these drawings which tor the purpose of illustration show our invention applied to a door, though it is adapted for use in -metallic partitions and other metallic structures, l and 2 indicate stiles o f the door, 3 the top rail, Li the center rail and 5 the panel bracket or molding members. 'lhe Stiles and rails as illustrated are each formed ot parallel spaced side plates ot sheet metal designated 6 and 6 respectively, the top and bottom rails and the stiles beingpreferably formed with integral edge plates 6b and being o en at one longitudinal edge so as' to be su stantially lil-shaped in cross-section as illustrated in Fig. Il. Each ,of the parallel spaced plates of the stiles and rails are, as shown, provided along their tree longitudinal edges with oppositely disposed straight or dat ianges 7 and 7a extending inwardly trom such plates at a right angle thereto. Contiguous to the longitudinal edges or" the panel brackets and also contiguous to the transverse edges 23a-4a ot the rail members these members have grooves 8-9 Which form seats for the opposing inwardly extending anges and the eXtreme edges of such members are preterably bent to form L -shaped portions l0 and ll, the vertical legs lOl-lla orp such L- shaped portions abutting against and litting Within the opposing parallel arranged side plates, and the other legs 10b and lll extending inwardly therefrom and at right angles thereto so as to form a seat 'for a combined bracing and Welding key or element l2.

As shown, a portion of such lfshaped ilanges are cut away at points directly opposite to each other to form notches l?) to permit a direct Welding contact between projections 12a .of the Weldingn key or element l2 and the inner surface ot the outer member.

V'ln assembling the parts the Welding element is slid longitudinally Within the panel bracket or molding member so that the projections 12a entend bevond both the outer and parallel Walls t" tot. 'lhe inwardly extending ilanes o'l" 1re outer member are than sprung into the slots in the inner member and the terninals ,of a Welding machine are applied so as to register with these projections. T-/fc have found that by this expedient We are not only enabled to procure a direct contact which Will localize the heat to effect a strong Welding union, but such union will also entend to the inner member. ln any event the'inner member is by the inwardly extendingn tlanges iirmly keyed in position.

'Referring now to lligs. 5 to l0 which llustrate a modified 'form of our invention, elements are in all resi este similar those described in Figs. l

extending to nstead of the longitudinally ling hey a series ci@ notches l in the inn member are provided. and a plurality .of transversely disposed Welding elements l5 have portions extending through such notches and are* retained in position by means of shoulders l5-qu and l5b adapted to trictionally engage the inner surfaces of the grooves 8 and 9.

ln lligs. ll to i3 We have shown another modilied torni ,of our invention which instead of having the notches, a series ot holes or apertures 16 are drilled through the vvall ot the inner member and al series of welding elements having portions eX- te'nding through opposing holes are employed.

ln llig. la We have shown how a series of such Welding elements may be conveniently employed to retain a stidening channel in position, said gure showing a series of notches 18 and 19, with a Welding element 17 having portions extending through the opposing members of a pair of notches and also illustrating how the Welding element may be seated in the stidening channel preparatory to the Welding operation, one' ot such elements being shown as bent so that its length is shortened and then subsequently hammered dovvn. so that its reduced portions will extend through the notches.

ln Figs. 16 to 19 We have shown another modied form of our invention in Which a combined stiiiiening and retaining channel 2O Jrior a, series of Welding elements 21 is employed and in this case the two inner members such as the stidening and retaining channel and the molding member are provided With pairs oit registering notches through which reduced portions @la and 2lb of Welding elements entend to provide contact points with the inner surface of the outer members.

ln liig. 20 which illustrates slight modiications, We have shown our preferred method of torming the projections l2 which consists ot depressing holes 12b contiguous to the point it is desired to have a projection and applying pressure downwardly. This results in the bulging out of the metal to form the projections l2 illustrated in said Fig. 20. ln said ligure, We have also shovvn a retaining channel :tor the Welding element l2 Without notches. l/Ve have 'lound that it the element l2 is fitted Within the channel and the metal is hammered contiguous to the project-ions to cause a slight bulge in the outer surface ont the channel. a good electrical Contact may be procured.

Having described our invention, We claim:

l. A sheet metal structure comprising a plurality of imper'liorate sheet-metal plates suitably spaced and assembled in subally parallel relation, a metallic conducting element arranged intern pas menace mediate said plates and provided with heat-A localizing projections extending outwardly beyond the opposite edges of said element and abutting against the inner surfaces of said spaced, parallel plates and a welded connection between the oppositeedge portions of said current-conducting element and the said inner surfaces of said spaced, parallel plates.

2. A sheet metal structure comprising outer andinner interengaging members, the outer member having oppositely-disposed and spaced imperforate walls, and the'inner member also having oppositely-disposed and spaced walls having interengaging portions abutting against the inner surfaces of the.

walls of the outer member, a fiat metalliccurrent-conducting element disposed be tween the opposite Walls of the said members and having heat-localizin edge-projections extending outwardly eyond the opposite edges of said element abutting at opposite sides against the inner surfaces of the opposite walls of one of said interengaging members, .and an electric-welded connection between the said opposite edge portions of said current-conducting element and the inner surfaces of the oppositely disposed walls against which it 'abuts 3. A sheet 'metal 4structure comprising outer and inner interengagin'g members, the outer member having oppositely-disposed and spaced imperforate walls, and the inner member also having oppositely-disposed and spaced walls having interengaging portions abutting against the inner surfaces of the walls of the outer member, a flat metallic longitudinally-extending current-conducting element disposed between the opposite walls of said members and having at opposite side edges series of projections abutting against the inner surfaces of the opposite walls of one of said interengaging members, and an electric Welded connection between the said opposite edge portions of said current-conducting element andthe inner surfaces of the oppositely disposed Walls against which it abuts. l

.4. A sheet metal structure comprising duter andinner interengaging members, the outer member having oppositely-disposed and spaced imperforate walls, and the inner member also having oppositely-disposed and spaced walls having interengaging portions abutting against the inner surfaces of the Walls of the outer member, and also having oppositely-arranged recesses in said opposite walls, a fiat metallic current-conducting element disposed between the opposite walls of said inner member and having edge projections extending through such recesses and into contact with the' imperforate Walls of the outer member, and a welded connection betweenI the said projections and the inner surfaces of saidimperfor'ate walls-of the said outer member. l

In witness whereof, We have signed our names to the foregoing specification in the presence of two subscribing witnesses. ANDREW J. CONNELL. CHARLI A. JOHNSON.. Witnesses:

JACOB COHEN, W. C. LANGE 

